PLACE p1, p2, p3, p4, p5;

MARKING p1: 0, p2: 0, p3: 0, p4: 0, p5: 0;

TRANSITION t1
CONSUME p1: 2, p2: 1;
PRODUCE p1: 1;

TRANSITION t2
CONSUME p2: 1, p4: 1;
PRODUCE p1: 3;

TRANSITION t3
CONSUME p2: 1;
PRODUCE p5: 1;

TRANSITION t4
CONSUME p5: 1;
PRODUCE p2: 2, p4: 1;

TRANSITION t5
CONSUME p3: 3, p4: 1;
PRODUCE p3: 5;